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<div class="title">graphchi_engine.hpp</div>  </div>
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<a href="graphchi__engine_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#ifndef DEF_GRAPHCHI_GRAPHCHI_ENGINE</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#define DEF_GRAPHCHI_GRAPHCHI_ENGINE</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#include &lt;fstream&gt;</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#include &lt;sstream&gt;</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#include &lt;fcntl.h&gt;</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#include &lt;unistd.h&gt;</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#include &lt;assert.h&gt;</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#include &lt;omp.h&gt;</span></div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="preprocessor">#include &lt;sys/time.h&gt;</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="chifilenames_8hpp.html">api/chifilenames.hpp</a>&quot;</span></div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="graph__objects_8hpp.html">api/graph_objects.hpp</a>&quot;</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="graphchi__context_8hpp.html">api/graphchi_context.hpp</a>&quot;</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="graphchi__program_8hpp.html">api/graphchi_program.hpp</a>&quot;</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="degree__data_8hpp.html">engine/auxdata/degree_data.hpp</a>&quot;</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="vertex__data_8hpp.html">engine/auxdata/vertex_data.hpp</a>&quot;</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="bitset__scheduler_8hpp.html">engine/bitset_scheduler.hpp</a>&quot;</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="stripedio_8hpp.html">io/stripedio.hpp</a>&quot;</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="logger_8hpp.html">logger/logger.hpp</a>&quot;</span></div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="metrics_8hpp.html">metrics/metrics.hpp</a>&quot;</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="memoryshard_8hpp.html">shards/memoryshard.hpp</a>&quot;</span></div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="slidingshard_8hpp.html">shards/slidingshard.hpp</a>&quot;</span></div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="preprocessor">#include &quot;<a class="code" href="pthread__tools_8hpp.html">util/pthread_tools.hpp</a>&quot;</span></div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="keyword">namespace </span>graphchi {</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    </div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> <a class="code" href="basic__dynamicengine__smoketest_8cpp.html#acf10237949ab87b83055ff6aa646c565">VertexDataType</a>, <span class="keyword">typename</span> EdgeDataType,   </div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keyword">typename</span> svertex_t = graphchi_vertex&lt;VertexDataType, EdgeDataType&gt; &gt;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    </div>
<div class="line"><a name="l00064"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html">   64</a></span>&#160;    <span class="keyword">class </span><a class="code" href="classgraphchi_1_1graphchi__engine.html">graphchi_engine</a> {</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;    <span class="keyword">public</span>:     </div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        <span class="keyword">typedef</span> <a class="code" href="classgraphchi_1_1sliding__shard.html">sliding_shard&lt;VertexDataType, EdgeDataType, svertex_t&gt;</a> <a class="code" href="classgraphchi_1_1sliding__shard.html">slidingshard_t</a>;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keyword">typedef</span> <a class="code" href="classgraphchi_1_1memory__shard.html">memory_shard&lt;VertexDataType, EdgeDataType, svertex_t&gt;</a> <a class="code" href="classgraphchi_1_1memory__shard.html">memshard_t</a>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        </div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;    <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        std::string base_filename;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keywordtype">int</span> nshards;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        </div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        <span class="comment">/* IO manager */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <a class="code" href="classgraphchi_1_1stripedio.html">stripedio</a> * iomgr;</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;        </div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        <span class="comment">/* Shards */</span></div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        std::vector&lt;slidingshard_t *&gt; sliding_shards;</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <a class="code" href="classgraphchi_1_1memory__shard.html">memshard_t</a> * memoryshard;</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        std::vector&lt;std::pair&lt;vid_t, vid_t&gt; &gt; intervals;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;        </div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;        <span class="comment">/* Auxilliary data handlers */</span></div>
<div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;        <a class="code" href="classgraphchi_1_1degree__data.html">degree_data</a> * degree_handler;</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;        <a class="code" href="classgraphchi_1_1vertex__data__store.html">vertex_data_store&lt;VertexDataType&gt;</a> * vertex_data_handler;</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;        </div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;        <span class="comment">/* Computational context */</span></div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;        <a class="code" href="structgraphchi_1_1graphchi__context.html">graphchi_context</a> chicontext;</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;        </div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;        <span class="comment">/* Scheduler */</span></div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        <a class="code" href="classgraphchi_1_1bitset__scheduler.html">bitset_scheduler</a> * scheduler;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;        </div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;        <span class="comment">/* Configuration */</span></div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;        <span class="keywordtype">bool</span> modifies_outedges;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        <span class="keywordtype">bool</span> modifies_inedges;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        <span class="keywordtype">bool</span> only_adjacency;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        <span class="keywordtype">bool</span> use_selective_scheduling;</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        <span class="keywordtype">bool</span> enable_deterministic_parallelism;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        <span class="keywordtype">bool</span> store_inedges;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        </div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        <span class="keywordtype">size_t</span> blocksize;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        <span class="keywordtype">int</span> membudget_mb;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;        <span class="keywordtype">int</span> load_threads;</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        <span class="keywordtype">int</span> exec_threads;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;        </div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;        <span class="comment">/* State */</span></div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;        vid_t sub_interval_st;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        vid_t sub_interval_en;</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        <span class="keywordtype">int</span> iter;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;        <span class="keywordtype">int</span> niters;</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;        <span class="keywordtype">int</span> exec_interval;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;        <span class="keywordtype">size_t</span> nupdates;</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        <span class="keywordtype">size_t</span> nedges;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keywordtype">size_t</span> work; <span class="comment">// work is the number of edges processed</span></div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        </div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="comment">/* Metrics */</span></div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        <a class="code" href="classgraphchi_1_1metrics.html">metrics</a> &amp;m;</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;        </div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        <span class="keywordtype">void</span> print_config() {</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Engine configuration: &quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot; exec_threads = &quot;</span> &lt;&lt; exec_threads &lt;&lt; std::endl;</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot; load_threads = &quot;</span> &lt;&lt; load_threads &lt;&lt; std::endl;</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot; membudget_mb = &quot;</span> &lt;&lt; membudget_mb &lt;&lt; std::endl;</div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot; blocksize = &quot;</span> &lt;&lt; blocksize &lt;&lt; std::endl;</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot; scheduler = &quot;</span> &lt;&lt; use_selective_scheduling &lt;&lt; std::endl;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        }</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        </div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        </div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a2aad6b622037d32ab3713d590823cd8e">  134</a></span>&#160;        <a class="code" href="classgraphchi_1_1graphchi__engine.html#a2aad6b622037d32ab3713d590823cd8e">graphchi_engine</a>(std::string _base_filename, <span class="keywordtype">int</span> _nshards, <span class="keywordtype">bool</span> _selective_scheduling, <a class="code" href="classgraphchi_1_1metrics.html">metrics</a> &amp;_m) : base_filename(_base_filename), nshards(_nshards), use_selective_scheduling(_selective_scheduling), m(_m) {</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;            <span class="comment">/* Initialize IO */</span></div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;            iomgr = <span class="keyword">new</span> <a class="code" href="classgraphchi_1_1stripedio.html">stripedio</a>(m);</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;            <span class="keywordflow">if</span> (disable_preloading()) {</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;                iomgr-&gt;set_disable_preloading(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;            }</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Initializing graphchi_engine. This engine expects &quot;</span> &lt;&lt; <span class="keyword">sizeof</span>(EdgeDataType)</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                        &lt;&lt; <span class="stringliteral">&quot;-byte edge data. &quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;            </div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;            <span class="comment">/* If number of shards is unspecified - discover */</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;            <span class="keywordflow">if</span> (nshards &lt; 1) {</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;                nshards = get_option_int(<span class="stringliteral">&quot;nshards&quot;</span>, 0);</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;                <span class="keywordflow">if</span> (nshards &lt; 1) {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;                    logstream(<a class="code" href="logger_8hpp.html#adf4476a6a4ea6c74231c826e899d7189">LOG_WARNING</a>) &lt;&lt; <span class="stringliteral">&quot;Number of shards was not specified (command-line argument &#39;nshards&#39;). Trying to detect. &quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;                    nshards = <a class="code" href="classgraphchi_1_1graphchi__engine.html#af5fba09baf9f293433ed1cfb90b28a06">discover_shard_num</a>();</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                }</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            }</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;            </div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;            <span class="comment">/* Initialize a plenty of fields */</span></div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;            memoryshard = NULL;</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;            modifies_outedges = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;            modifies_inedges = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;            only_adjacency = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;            blocksize = get_option_long(<span class="stringliteral">&quot;blocksize&quot;</span>, 1024 * 1024);</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;            membudget_mb = get_option_int(<span class="stringliteral">&quot;membudget_mb&quot;</span>, 1024);</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;            nupdates = 0;</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;            iter = 0;</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;            work = 0;</div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;            nedges = 0;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;            scheduler = NULL;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;            store_inedges = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;            enable_deterministic_parallelism = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;            load_threads = get_option_int(<span class="stringliteral">&quot;loadthreads&quot;</span>, 2);</div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;            exec_threads = get_option_int(<span class="stringliteral">&quot;execthreads&quot;</span>, omp_get_max_threads());</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;            </div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;            <span class="comment">/* Load graph shard interval information */</span></div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;            <a class="code" href="classgraphchi_1_1graphchi__engine.html#a8c4fe7f4bccdbb667e6d4af8d35a07c0">load_vertex_intervals</a>();</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;            </div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;            _m.set(<span class="stringliteral">&quot;engine&quot;</span>, <span class="stringliteral">&quot;default&quot;</span>);</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;        }</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;        </div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        <span class="keyword">virtual</span> ~<a class="code" href="classgraphchi_1_1graphchi__engine.html">graphchi_engine</a>() {</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;            <span class="keywordflow">if</span> (degree_handler != NULL) <span class="keyword">delete</span> degree_handler;</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;            <span class="keywordflow">if</span> (vertex_data_handler != NULL) <span class="keyword">delete</span> vertex_data_handler;</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;            <span class="keywordflow">if</span> (memoryshard != NULL) {</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                <span class="keyword">delete</span> memoryshard;</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;                memoryshard = NULL;</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;            }</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; (int)sliding_shards.size(); i++) {</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;                <span class="keywordflow">if</span> (sliding_shards[i] != NULL) {</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;                    <span class="keyword">delete</span> sliding_shards[i];</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;                }</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;                sliding_shards[i] = NULL;</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;            }</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;            degree_handler = NULL;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;            vertex_data_handler = NULL;</div>
<div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;            <span class="keyword">delete</span> iomgr;</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;        }</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;        </div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;        </div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;        </div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;        <span class="keyword">virtual</span> degree_data * create_degree_handler() {</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">new</span> degree_data(base_filename, iomgr);</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;        }</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        </div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">bool</span> disable_preloading() {</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;        }</div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;        </div>
<div class="line"><a name="l00208"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#af5fba09baf9f293433ed1cfb90b28a06">  208</a></span>&#160;        <span class="keywordtype">int</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#af5fba09baf9f293433ed1cfb90b28a06">discover_shard_num</a>() {</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;            <span class="keywordtype">int</span> _nshards = find_shards&lt;EdgeDataType&gt;(base_filename);</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;            <span class="keywordflow">if</span> (_nshards == 0) {</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) &lt;&lt; <span class="stringliteral">&quot;Could not find suitable shards - maybe you need to run sharder to create them?&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) &lt;&lt; <span class="stringliteral">&quot;You need to create the shards with edge data-type of size &quot;</span> &lt;&lt; <span class="keyword">sizeof</span>(EdgeDataType) &lt;&lt; <span class="stringliteral">&quot; bytes.&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) &lt;&lt; <span class="stringliteral">&quot;To specify the number of shards, use command-line parameter &#39;nshards&#39;&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;                assert(0);</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;            }</div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            <span class="keywordflow">return</span> _nshards;</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;        }</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;       </div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;        </div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> initialize_sliding_shards() {</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;            assert(sliding_shards.size() == 0);</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> p=0; p &lt; nshards; p++) {</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;                std::string edata_filename = filename_shard_edata&lt;EdgeDataType&gt;(base_filename, p, nshards);</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;                std::string adj_filename = filename_shard_adj(base_filename, p, nshards);</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;                </div>
<div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;                <span class="comment">/* Let the IO manager know that we will be reading these files, and </span></div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;<span class="comment">                   it should decide whether to preload them or not.</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="comment">                  */</span></div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;                iomgr-&gt;<a class="code" href="classgraphchi_1_1stripedio.html#a07dcf36dade9f8820a7717cde1de498d">allow_preloading</a>(edata_filename);</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;                iomgr-&gt;<a class="code" href="classgraphchi_1_1stripedio.html#a07dcf36dade9f8820a7717cde1de498d">allow_preloading</a>(adj_filename);</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;                </div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;                sliding_shards.push_back(</div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;                   <span class="keyword">new</span> slidingshard_t(iomgr, edata_filename, </div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;                                      adj_filename,</div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;                                      intervals[p].first, </div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;                                      intervals[p].second, </div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;                                      blocksize, </div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;                                      m, </div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;                                      !modifies_outedges, </div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;                                      only_adjacency));</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;                <span class="keywordflow">if</span> (!only_adjacency) </div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;                    nedges += sliding_shards[sliding_shards.size() - 1]-&gt;num_edges();</div>
<div class="line"><a name="l00243"></a><span class="lineno">  243</span>&#160;            }</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;            </div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;        }</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;        </div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> initialize_scheduler() {</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;            <span class="keywordflow">if</span> (use_selective_scheduling) {</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;                scheduler = <span class="keyword">new</span> bitset_scheduler((<span class="keywordtype">int</span>) num_vertices());</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;                scheduler-&gt;add_task_to_all();</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;                scheduler = NULL;</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;            }</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;        }</div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        </div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;  </div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;        </div>
<div class="line"><a name="l00261"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#aa020eb5cb9317f4a4e4e69e17c9846ba">  261</a></span>&#160;        <span class="keyword">virtual</span> vid_t <a class="code" href="classgraphchi_1_1graphchi__engine.html#aa020eb5cb9317f4a4e4e69e17c9846ba">determine_next_window</a>(vid_t iinterval, vid_t fromvid, vid_t maxvid, <span class="keywordtype">size_t</span> membudget) {</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;            <span class="comment">/* Load degrees */</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;            degree_handler-&gt;<a class="code" href="classgraphchi_1_1degree__data.html#a845b713beb8419274e2b5312ddd8bc5f">load</a>(fromvid, maxvid);</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;            </div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;            <span class="keywordtype">size_t</span> memreq = 0;</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;            <span class="keywordtype">int</span> max_interval = maxvid - fromvid;</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; max_interval; i++) {</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;                <a class="code" href="structgraphchi_1_1degree.html">degree</a> deg = degree_handler-&gt;get_degree(fromvid + i);</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;                <span class="keywordtype">int</span> inc = deg.indegree;</div>
<div class="line"><a name="l00270"></a><span class="lineno">  270</span>&#160;                <span class="keywordtype">int</span> outc = deg.outdegree;</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;                </div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;                <span class="comment">// Raw data and object cost included</span></div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;                memreq += <span class="keyword">sizeof</span>(svertex_t) + (<span class="keyword">sizeof</span>(EdgeDataType) + <span class="keyword">sizeof</span>(vid_t) + <span class="keyword">sizeof</span>(<a class="code" href="classgraphchi_1_1graphchi__edge.html">graphchi_edge&lt;EdgeDataType&gt;</a>))*(outc + inc);</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;                <span class="keywordflow">if</span> (memreq &gt; membudget) {</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;                    <span class="keywordflow">return</span> fromvid + i - 1;  <span class="comment">// Previous was enough</span></div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;                }</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;            }</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;            <span class="keywordflow">return</span> maxvid;</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;        }</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;        </div>
<div class="line"><a name="l00285"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#ae462721ca19a0cdd5e406bb641a4fd4b">  285</a></span>&#160;        <span class="keywordtype">size_t</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#ae462721ca19a0cdd5e406bb641a4fd4b">num_edges_subinterval</a>(vid_t st, vid_t en) {</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;            <span class="keywordtype">size_t</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a0d890e78c7faf723ed8b58009947ae2e">num_edges</a> = 0;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;            <span class="keywordtype">int</span> nvertices = en - st + 1;</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;            <span class="keywordflow">if</span> (scheduler != NULL) {</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;                <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; nvertices; i++) {</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;                    <span class="keywordtype">bool</span> is_sched = scheduler-&gt;is_scheduled(st + i);</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;                    <span class="keywordflow">if</span> (is_sched) {</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;                        <a class="code" href="structgraphchi_1_1degree.html">degree</a> d = degree_handler-&gt;get_degree(st + i);</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;                        num_edges += d.indegree * store_inedges + d.outdegree;</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;                    }</div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;                }</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;                <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; nvertices; i++) {</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;                    <a class="code" href="structgraphchi_1_1degree.html">degree</a> d = degree_handler-&gt;get_degree(st + i);</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;                    num_edges += d.indegree * store_inedges + d.outdegree;</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;                }</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;            }</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a0d890e78c7faf723ed8b58009947ae2e">num_edges</a>;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;        }</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;        </div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> load_before_updates(std::vector&lt;svertex_t&gt; &amp;vertices) {</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;            omp_set_num_threads(load_threads);</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;<span class="preprocessor">#pragma omp parallel for schedule(dynamic, 1)</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;<span class="preprocessor"></span>            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> p=-1; p &lt; nshards; p++)  {</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;                <span class="keywordflow">if</span> (p==(-1)) {</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;                    <span class="comment">/* Load memory shard */</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;                    <span class="keywordflow">if</span> (!memoryshard-&gt;loaded()) {</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;                        memoryshard-&gt;load();</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;                    }</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;                    </div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;                    <span class="comment">/* Load vertex edges from memory shard */</span></div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;                    memoryshard-&gt;load_vertices(sub_interval_st, sub_interval_en, vertices);</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;                    <span class="comment">/* Load vertices */</span> </div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;                    vertex_data_handler-&gt;load(sub_interval_st, sub_interval_en);</div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;                    <span class="comment">/* Load edges from a sliding shard */</span></div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;                    <span class="keywordflow">if</span> (p != exec_interval) {</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;                        sliding_shards[p]-&gt;read_next_vertices((<span class="keywordtype">int</span>) vertices.size(), sub_interval_st, vertices,</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;                                                              scheduler != NULL &amp;&amp; chicontext.iteration == 0);</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;                        </div>
<div class="line"><a name="l00326"></a><span class="lineno">  326</span>&#160;                    }</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;                }</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;            }</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;            </div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;            <span class="comment">/* Wait for all reads to complete */</span></div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;            iomgr-&gt;wait_for_reads();</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;        }</div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;        </div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;        <span class="keywordtype">void</span> exec_updates(GraphChiProgram&lt;VertexDataType, EdgeDataType, svertex_t&gt; &amp;userprogram,</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;                            std::vector&lt;svertex_t&gt; &amp;vertices) {</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;            metrics_entry me = m.start_time();</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;            <span class="keywordtype">size_t</span> nvertices = vertices.size();</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;            <span class="keywordflow">if</span> (!enable_deterministic_parallelism) {</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;                <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; (int)nvertices; i++) vertices[i].parallel_safe = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;            }</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;            </div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;            omp_set_num_threads(exec_threads);</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;            </div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;<span class="preprocessor">#pragma omp parallel sections </span></div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;<span class="preprocessor"></span>            {</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;<span class="preprocessor">#pragma omp section</span></div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;<span class="preprocessor"></span>                {</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;<span class="preprocessor">#pragma omp parallel for schedule(dynamic)</span></div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;<span class="preprocessor"></span>                    <span class="keywordflow">for</span>(<span class="keywordtype">int</span> vid=sub_interval_st; vid &lt;= (int)sub_interval_en; vid++) {</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;                        svertex_t &amp; v = vertices[vid - sub_interval_st];</div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;                        </div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;                        <span class="keywordflow">if</span> (exec_threads == 1 || v.parallel_safe) {</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;                            v.dataptr = vertex_data_handler-&gt;vertex_data_ptr(vid);</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;                            <span class="keywordflow">if</span> (v.scheduled) </div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;                                userprogram.update(v, chicontext);</div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;                        }</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;                    }</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;                }</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;<span class="preprocessor">#pragma omp section</span></div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;<span class="preprocessor"></span>                {</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;                    <span class="keywordflow">if</span> (exec_threads &gt; 1 &amp;&amp; enable_deterministic_parallelism) {</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;                        <span class="keywordtype">int</span> nonsafe_count = 0;</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;                        <span class="keywordflow">for</span>(<span class="keywordtype">int</span> vid=sub_interval_st; vid &lt;= (int)sub_interval_en; vid++) {</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;                            svertex_t &amp; v = vertices[vid - sub_interval_st];</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;                            <span class="keywordflow">if</span> (!v.parallel_safe &amp;&amp; v.scheduled) {</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;                                v.dataptr = vertex_data_handler-&gt;vertex_data_ptr(vid);</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;                                userprogram.update(v, chicontext);</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;                                nonsafe_count++;</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;                            }</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;                        }</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;                        </div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;                        m.<a class="code" href="classgraphchi_1_1metrics.html#a5f3b783cf6e03ddd112ba9c96c5db1cb">add</a>(<span class="stringliteral">&quot;serialized-updates&quot;</span>, nonsafe_count);</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;                    }</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;                }</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;            }</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;            m.stop_time(me, <span class="stringliteral">&quot;execute-updates&quot;</span>);</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;        }</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;        </div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> init_vertices(std::vector&lt;svertex_t&gt; &amp;vertices, graphchi_edge&lt;EdgeDataType&gt; * &amp;edata) {</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;            <span class="keywordtype">size_t</span> nvertices = vertices.size();</div>
<div class="line"><a name="l00381"></a><span class="lineno">  381</span>&#160;            </div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;            <span class="comment">/* Compute number of edges */</span></div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;            <span class="keywordtype">size_t</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a0d890e78c7faf723ed8b58009947ae2e">num_edges</a> = <a class="code" href="classgraphchi_1_1graphchi__engine.html#ae462721ca19a0cdd5e406bb641a4fd4b">num_edges_subinterval</a>(sub_interval_st, sub_interval_en);</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;            </div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;            <span class="comment">/* Allocate edge buffer */</span></div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;            edata = (graphchi_edge&lt;EdgeDataType&gt;*) malloc(num_edges * <span class="keyword">sizeof</span>(graphchi_edge&lt;EdgeDataType&gt;));</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;            </div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;            <span class="comment">/* Assign vertex edge array pointers */</span></div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;            <span class="keywordtype">int</span> ecounter = 0;</div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; (int)nvertices; i++) {</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;                degree d = degree_handler-&gt;get_degree(sub_interval_st + i);</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;                <span class="keywordtype">int</span> inc = d.indegree;</div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;                <span class="keywordtype">int</span> outc = d.outdegree;</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;                vertices[i] = svertex_t(sub_interval_st + i, &amp;edata[ecounter], </div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;                                        &amp;edata[ecounter + inc * store_inedges], inc, outc);</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;                <span class="keywordflow">if</span> (scheduler != NULL) {</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;                    <span class="keywordtype">bool</span> is_sched = scheduler-&gt;is_scheduled(sub_interval_st + i);</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;                    <span class="keywordflow">if</span> (is_sched) {</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;                        vertices[i].scheduled =  <span class="keyword">true</span>;</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;                        nupdates++;</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;                        ecounter += inc * store_inedges + outc;</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;                    }</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;                    nupdates++; </div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;                    vertices[i].scheduled =  <span class="keyword">true</span>;</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;                    ecounter += inc * store_inedges + outc;</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;                }</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;            }                   </div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;            work += ecounter;</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;        }</div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;        </div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;        </div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;        <span class="keywordtype">void</span> save_vertices(std::vector&lt;svertex_t&gt; &amp;vertices) {</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;            <span class="keywordtype">size_t</span> nvertices = vertices.size();</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;            <span class="keywordtype">bool</span> modified_any_vertex = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; (int)nvertices; i++) {</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;                <span class="keywordflow">if</span> (vertices[i].modified) {</div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;                    modified_any_vertex = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;                    <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;                }</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;            }</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            <span class="keywordflow">if</span> (modified_any_vertex) {</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;                vertex_data_handler-&gt;save();</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;            }</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;        }</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;        </div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> load_after_updates(std::vector&lt;svertex_t&gt; &amp;vertices) {</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;            <span class="comment">// Do nothing.</span></div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;        }   </div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;        </div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> write_delta_log() {</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;            <span class="comment">// Write delta log</span></div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;            std::string deltafname = iomgr-&gt;multiplexprefix(0) + base_filename + <span class="stringliteral">&quot;.deltalog&quot;</span>;</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;            FILE * df = fopen(deltafname.c_str(), (chicontext.iteration == 0  ? <span class="stringliteral">&quot;w&quot;</span> : <span class="stringliteral">&quot;a&quot;</span>));</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;            fprintf(df, <span class="stringliteral">&quot;%d,%lu,%lu,%lf\n&quot;</span>, chicontext.iteration, nupdates, work, chicontext.get_delta()); </div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;            fclose(df);</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;        }</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;        </div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;        </div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;        <span class="keyword">virtual</span> std::pair&lt;vid_t, vid_t&gt; get_interval(<span class="keywordtype">int</span> i) {</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;            <span class="keywordflow">return</span> intervals[i];</div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;        }</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;        </div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        vid_t get_interval_start(<span class="keywordtype">int</span> i) {</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;            <span class="keywordflow">return</span> get_interval(i).first;</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;        }</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;        </div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;        vid_t get_interval_end(<span class="keywordtype">int</span> i) {</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;            <span class="keywordflow">return</span> get_interval(i).second;</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;        }</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;        </div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> num_vertices() {</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;            <span class="keywordflow">return</span> 1 + intervals[nshards - 1].second;</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;        }</div>
<div class="line"><a name="l00456"></a><span class="lineno">  456</span>&#160;        </div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;       graphchi_context &amp;get_context() {</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;            <span class="keywordflow">return</span> chicontext;</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        }</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        </div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;        <span class="keywordtype">size_t</span> num_updates() {</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;            <span class="keywordflow">return</span> nupdates;</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;        }</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;        </div>
<div class="line"><a name="l00468"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#af7e3a49f9b4f34cd1569077d409b67e5">  468</a></span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#af7e3a49f9b4f34cd1569077d409b67e5">num_edges_safe</a>() {</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;            <span class="keywordflow">return</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a0d890e78c7faf723ed8b58009947ae2e">num_edges</a>();</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;        }</div>
<div class="line"><a name="l00471"></a><span class="lineno">  471</span>&#160;        </div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> num_buffered_edges() {</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;            <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;        }</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;        </div>
<div class="line"><a name="l00479"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a0d890e78c7faf723ed8b58009947ae2e">  479</a></span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">size_t</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a0d890e78c7faf723ed8b58009947ae2e">num_edges</a>() {</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;            <span class="keywordflow">if</span> (only_adjacency) {</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;                <span class="comment">// TODO: fix.</span></div>
<div class="line"><a name="l00482"></a><span class="lineno">  482</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) &lt;&lt; <span class="stringliteral">&quot;Asked number of edges, but engine was run without edge-data.&quot;</span> &lt;&lt; std::endl; </div>
<div class="line"><a name="l00483"></a><span class="lineno">  483</span>&#160;                <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00484"></a><span class="lineno">  484</span>&#160;            }</div>
<div class="line"><a name="l00485"></a><span class="lineno">  485</span>&#160;            <span class="keywordflow">return</span> nedges;</div>
<div class="line"><a name="l00486"></a><span class="lineno">  486</span>&#160;        }</div>
<div class="line"><a name="l00487"></a><span class="lineno">  487</span>&#160;        </div>
<div class="line"><a name="l00492"></a><span class="lineno">  492</span>&#160;        <span class="comment">// TODO: support for a minimum fraction of scheduled vertices</span></div>
<div class="line"><a name="l00493"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a56a595a75cb53c418ce810b9423d2b6b">  493</a></span>&#160;        <span class="keywordtype">bool</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a56a595a75cb53c418ce810b9423d2b6b">is_any_vertex_scheduled</a>(vid_t st, vid_t en) {</div>
<div class="line"><a name="l00494"></a><span class="lineno">  494</span>&#160;            <span class="keywordflow">if</span> (scheduler == NULL) <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00495"></a><span class="lineno">  495</span>&#160;            <span class="keywordflow">for</span>(vid_t v=st; v&lt;=en; v++) {</div>
<div class="line"><a name="l00496"></a><span class="lineno">  496</span>&#160;                <span class="keywordflow">if</span> (scheduler-&gt;is_scheduled(v)) {</div>
<div class="line"><a name="l00497"></a><span class="lineno">  497</span>&#160;                    <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00498"></a><span class="lineno">  498</span>&#160;                }</div>
<div class="line"><a name="l00499"></a><span class="lineno">  499</span>&#160;            }</div>
<div class="line"><a name="l00500"></a><span class="lineno">  500</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00501"></a><span class="lineno">  501</span>&#160;        }</div>
<div class="line"><a name="l00502"></a><span class="lineno">  502</span>&#160;        </div>
<div class="line"><a name="l00503"></a><span class="lineno">  503</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> initialize_iter() {</div>
<div class="line"><a name="l00504"></a><span class="lineno">  504</span>&#160;            <span class="comment">// Do nothing</span></div>
<div class="line"><a name="l00505"></a><span class="lineno">  505</span>&#160;        }</div>
<div class="line"><a name="l00506"></a><span class="lineno">  506</span>&#160;        </div>
<div class="line"><a name="l00507"></a><span class="lineno">  507</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> initialize_before_run() {</div>
<div class="line"><a name="l00508"></a><span class="lineno">  508</span>&#160;            <span class="comment">// Do nothing</span></div>
<div class="line"><a name="l00509"></a><span class="lineno">  509</span>&#160;        }</div>
<div class="line"><a name="l00510"></a><span class="lineno">  510</span>&#160;        </div>
<div class="line"><a name="l00511"></a><span class="lineno">  511</span>&#160;        <span class="keyword">virtual</span> memshard_t * create_memshard(vid_t interval_st, vid_t interval_en) {</div>
<div class="line"><a name="l00512"></a><span class="lineno">  512</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">new</span> memshard_t(this-&gt;iomgr,</div>
<div class="line"><a name="l00513"></a><span class="lineno">  513</span>&#160;                           filename_shard_edata&lt;EdgeDataType&gt;(base_filename, exec_interval, nshards),  </div>
<div class="line"><a name="l00514"></a><span class="lineno">  514</span>&#160;                           filename_shard_adj(base_filename, exec_interval, nshards),  </div>
<div class="line"><a name="l00515"></a><span class="lineno">  515</span>&#160;                           interval_st, </div>
<div class="line"><a name="l00516"></a><span class="lineno">  516</span>&#160;                           interval_en,</div>
<div class="line"><a name="l00517"></a><span class="lineno">  517</span>&#160;                           m);</div>
<div class="line"><a name="l00518"></a><span class="lineno">  518</span>&#160;        }</div>
<div class="line"><a name="l00519"></a><span class="lineno">  519</span>&#160;        </div>
<div class="line"><a name="l00525"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a41254a769f3b0367b08f48bf2e16aa86">  525</a></span>&#160;        <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a41254a769f3b0367b08f48bf2e16aa86">run</a>(<a class="code" href="classgraphchi_1_1_graph_chi_program.html">GraphChiProgram&lt;VertexDataType, EdgeDataType, svertex_t&gt;</a> &amp;userprogram, <span class="keywordtype">int</span> _niters) {</div>
<div class="line"><a name="l00526"></a><span class="lineno">  526</span>&#160;            m.start_time(<span class="stringliteral">&quot;runtime&quot;</span>);</div>
<div class="line"><a name="l00527"></a><span class="lineno">  527</span>&#160;            degree_handler = create_degree_handler();</div>
<div class="line"><a name="l00528"></a><span class="lineno">  528</span>&#160;</div>
<div class="line"><a name="l00529"></a><span class="lineno">  529</span>&#160;            niters = _niters;</div>
<div class="line"><a name="l00530"></a><span class="lineno">  530</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;GraphChi starting&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00531"></a><span class="lineno">  531</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Licensed under the Apache License 2.0&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00532"></a><span class="lineno">  532</span>&#160;            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Copyright Aapo Kyrola et al., Carnegie Mellon University (2012)&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00533"></a><span class="lineno">  533</span>&#160;            </div>
<div class="line"><a name="l00534"></a><span class="lineno">  534</span>&#160;            </div>
<div class="line"><a name="l00535"></a><span class="lineno">  535</span>&#160;            vertex_data_handler = <span class="keyword">new</span> <a class="code" href="classgraphchi_1_1vertex__data__store.html">vertex_data_store&lt;VertexDataType&gt;</a>(base_filename, num_vertices(), iomgr);</div>
<div class="line"><a name="l00536"></a><span class="lineno">  536</span>&#160;            initialize_before_run();</div>
<div class="line"><a name="l00537"></a><span class="lineno">  537</span>&#160;</div>
<div class="line"><a name="l00538"></a><span class="lineno">  538</span>&#160;            </div>
<div class="line"><a name="l00539"></a><span class="lineno">  539</span>&#160;            <span class="comment">/* Setup */</span></div>
<div class="line"><a name="l00540"></a><span class="lineno">  540</span>&#160;            initialize_sliding_shards();</div>
<div class="line"><a name="l00541"></a><span class="lineno">  541</span>&#160;            initialize_scheduler();</div>
<div class="line"><a name="l00542"></a><span class="lineno">  542</span>&#160;            omp_set_nested(1);</div>
<div class="line"><a name="l00543"></a><span class="lineno">  543</span>&#160;            </div>
<div class="line"><a name="l00544"></a><span class="lineno">  544</span>&#160;            <span class="comment">/* Print configuration */</span></div>
<div class="line"><a name="l00545"></a><span class="lineno">  545</span>&#160;            print_config();</div>
<div class="line"><a name="l00546"></a><span class="lineno">  546</span>&#160;            </div>
<div class="line"><a name="l00547"></a><span class="lineno">  547</span>&#160;</div>
<div class="line"><a name="l00548"></a><span class="lineno">  548</span>&#160;            </div>
<div class="line"><a name="l00549"></a><span class="lineno">  549</span>&#160;            <span class="comment">/* Main loop */</span></div>
<div class="line"><a name="l00550"></a><span class="lineno">  550</span>&#160;            <span class="keywordflow">for</span>(iter=0; iter &lt; niters; iter++) {</div>
<div class="line"><a name="l00551"></a><span class="lineno">  551</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Start iteration: &quot;</span> &lt;&lt; iter &lt;&lt; std::endl;</div>
<div class="line"><a name="l00552"></a><span class="lineno">  552</span>&#160;                </div>
<div class="line"><a name="l00553"></a><span class="lineno">  553</span>&#160;                initialize_iter();</div>
<div class="line"><a name="l00554"></a><span class="lineno">  554</span>&#160;                </div>
<div class="line"><a name="l00555"></a><span class="lineno">  555</span>&#160;                <span class="comment">/* Check vertex data file has the right size (number of vertices may change) */</span></div>
<div class="line"><a name="l00556"></a><span class="lineno">  556</span>&#160;                vertex_data_handler-&gt;check_size(num_vertices());</div>
<div class="line"><a name="l00557"></a><span class="lineno">  557</span>&#160;                </div>
<div class="line"><a name="l00558"></a><span class="lineno">  558</span>&#160;                <span class="comment">/* Keep the context object updated */</span></div>
<div class="line"><a name="l00559"></a><span class="lineno">  559</span>&#160;                chicontext.filename = base_filename;</div>
<div class="line"><a name="l00560"></a><span class="lineno">  560</span>&#160;                chicontext.iteration = iter;</div>
<div class="line"><a name="l00561"></a><span class="lineno">  561</span>&#160;                chicontext.num_iterations = niters;</div>
<div class="line"><a name="l00562"></a><span class="lineno">  562</span>&#160;                chicontext.nvertices = num_vertices();</div>
<div class="line"><a name="l00563"></a><span class="lineno">  563</span>&#160;                chicontext.scheduler = scheduler;</div>
<div class="line"><a name="l00564"></a><span class="lineno">  564</span>&#160;                chicontext.execthreads = exec_threads;</div>
<div class="line"><a name="l00565"></a><span class="lineno">  565</span>&#160;                chicontext.reset_deltas(exec_threads);</div>
<div class="line"><a name="l00566"></a><span class="lineno">  566</span>&#160;                </div>
<div class="line"><a name="l00567"></a><span class="lineno">  567</span>&#160;                <span class="comment">/* Call iteration-begin event handler */</span></div>
<div class="line"><a name="l00568"></a><span class="lineno">  568</span>&#160;                userprogram.<a class="code" href="classgraphchi_1_1_graph_chi_program.html#aec6d16fd6dddf1543afe55360a653cf2">before_iteration</a>(iter, chicontext);</div>
<div class="line"><a name="l00569"></a><span class="lineno">  569</span>&#160;                </div>
<div class="line"><a name="l00570"></a><span class="lineno">  570</span>&#160;                <span class="comment">/* Check scheduler. If no scheduled tasks, terminate. */</span></div>
<div class="line"><a name="l00571"></a><span class="lineno">  571</span>&#160;                <span class="keywordflow">if</span> (use_selective_scheduling) {</div>
<div class="line"><a name="l00572"></a><span class="lineno">  572</span>&#160;                    <span class="keywordflow">if</span> (scheduler != NULL) {</div>
<div class="line"><a name="l00573"></a><span class="lineno">  573</span>&#160;                        <span class="keywordflow">if</span> (!scheduler-&gt;has_new_tasks) {</div>
<div class="line"><a name="l00574"></a><span class="lineno">  574</span>&#160;                            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;No new tasks to run!&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00575"></a><span class="lineno">  575</span>&#160;                            <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00576"></a><span class="lineno">  576</span>&#160;                        }</div>
<div class="line"><a name="l00577"></a><span class="lineno">  577</span>&#160;                        scheduler-&gt;has_new_tasks = <span class="keyword">false</span>; <span class="comment">// Kind of misleading since scheduler may still have tasks - but no new tasks.</span></div>
<div class="line"><a name="l00578"></a><span class="lineno">  578</span>&#160;                    }</div>
<div class="line"><a name="l00579"></a><span class="lineno">  579</span>&#160;                }</div>
<div class="line"><a name="l00580"></a><span class="lineno">  580</span>&#160;                </div>
<div class="line"><a name="l00581"></a><span class="lineno">  581</span>&#160;                <span class="comment">/* Interval loop */</span></div>
<div class="line"><a name="l00582"></a><span class="lineno">  582</span>&#160;                <span class="keywordflow">for</span>(exec_interval=0; exec_interval &lt; nshards; ++exec_interval) {</div>
<div class="line"><a name="l00583"></a><span class="lineno">  583</span>&#160;                    <span class="comment">/* Determine interval limits */</span></div>
<div class="line"><a name="l00584"></a><span class="lineno">  584</span>&#160;                    vid_t interval_st = get_interval_start(exec_interval);</div>
<div class="line"><a name="l00585"></a><span class="lineno">  585</span>&#160;                    vid_t interval_en = get_interval_end(exec_interval);</div>
<div class="line"><a name="l00586"></a><span class="lineno">  586</span>&#160;                    </div>
<div class="line"><a name="l00587"></a><span class="lineno">  587</span>&#160;                    userprogram.<a class="code" href="classgraphchi_1_1_graph_chi_program.html#ab2f7244ddb743deb859dbc2fc927078a">before_exec_interval</a>(interval_st, interval_en, chicontext);</div>
<div class="line"><a name="l00588"></a><span class="lineno">  588</span>&#160;</div>
<div class="line"><a name="l00589"></a><span class="lineno">  589</span>&#160;                    <span class="comment">/* Flush stream shard for the exec interval */</span></div>
<div class="line"><a name="l00590"></a><span class="lineno">  590</span>&#160;                    sliding_shards[exec_interval]-&gt;flush();</div>
<div class="line"><a name="l00591"></a><span class="lineno">  591</span>&#160;                    iomgr-&gt;wait_for_writes(); <span class="comment">// Actually we would need to only wait for         writes of given shard. TODO.</span></div>
<div class="line"><a name="l00592"></a><span class="lineno">  592</span>&#160;                    </div>
<div class="line"><a name="l00593"></a><span class="lineno">  593</span>&#160;                    <span class="comment">/* Initialize memory shard */</span></div>
<div class="line"><a name="l00594"></a><span class="lineno">  594</span>&#160;                    <span class="keywordflow">if</span> (memoryshard != NULL) <span class="keyword">delete</span> memoryshard;</div>
<div class="line"><a name="l00595"></a><span class="lineno">  595</span>&#160;                    memoryshard = create_memshard(interval_st, interval_en);</div>
<div class="line"><a name="l00596"></a><span class="lineno">  596</span>&#160;                    memoryshard-&gt;only_adjacency = only_adjacency;</div>
<div class="line"><a name="l00597"></a><span class="lineno">  597</span>&#160;                    </div>
<div class="line"><a name="l00598"></a><span class="lineno">  598</span>&#160;                    </div>
<div class="line"><a name="l00599"></a><span class="lineno">  599</span>&#160;                    sub_interval_st = interval_st;</div>
<div class="line"><a name="l00600"></a><span class="lineno">  600</span>&#160;                    logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; chicontext.runtime() &lt;&lt; <span class="stringliteral">&quot;s: Starting: &quot;</span> </div>
<div class="line"><a name="l00601"></a><span class="lineno">  601</span>&#160;                        &lt;&lt; sub_interval_st &lt;&lt; <span class="stringliteral">&quot; -- &quot;</span> &lt;&lt; interval_en &lt;&lt; std::endl;</div>
<div class="line"><a name="l00602"></a><span class="lineno">  602</span>&#160;                    </div>
<div class="line"><a name="l00603"></a><span class="lineno">  603</span>&#160;                    <span class="keywordflow">while</span> (sub_interval_st &lt; interval_en) {</div>
<div class="line"><a name="l00604"></a><span class="lineno">  604</span>&#160;                        <span class="comment">/* Determine the sub interval */</span></div>
<div class="line"><a name="l00605"></a><span class="lineno">  605</span>&#160;                        sub_interval_en = <a class="code" href="classgraphchi_1_1graphchi__engine.html#aa020eb5cb9317f4a4e4e69e17c9846ba">determine_next_window</a>(exec_interval,</div>
<div class="line"><a name="l00606"></a><span class="lineno">  606</span>&#160;                                                                sub_interval_st, </div>
<div class="line"><a name="l00607"></a><span class="lineno">  607</span>&#160;                                                                interval_en, </div>
<div class="line"><a name="l00608"></a><span class="lineno">  608</span>&#160;                                                                membudget_mb * 1024 * 1024);</div>
<div class="line"><a name="l00609"></a><span class="lineno">  609</span>&#160;                        assert(sub_interval_en &gt; sub_interval_st);</div>
<div class="line"><a name="l00610"></a><span class="lineno">  610</span>&#160;                        </div>
<div class="line"><a name="l00611"></a><span class="lineno">  611</span>&#160;                        logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Iteration &quot;</span> &lt;&lt; iter &lt;&lt; <span class="stringliteral">&quot;/&quot;</span> &lt;&lt; (niters - 1) &lt;&lt; <span class="stringliteral">&quot;, subinterval: &quot;</span> &lt;&lt; sub_interval_st &lt;&lt; <span class="stringliteral">&quot; - &quot;</span> &lt;&lt; sub_interval_en &lt;&lt; std::endl;</div>
<div class="line"><a name="l00612"></a><span class="lineno">  612</span>&#160;                        </div>
<div class="line"><a name="l00613"></a><span class="lineno">  613</span>&#160;                        <span class="keywordtype">bool</span> any_vertex_scheduled = <a class="code" href="classgraphchi_1_1graphchi__engine.html#a56a595a75cb53c418ce810b9423d2b6b">is_any_vertex_scheduled</a>(sub_interval_st, sub_interval_en);</div>
<div class="line"><a name="l00614"></a><span class="lineno">  614</span>&#160;                        <span class="keywordflow">if</span> (!any_vertex_scheduled) {</div>
<div class="line"><a name="l00615"></a><span class="lineno">  615</span>&#160;                            logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;No vertices scheduled, skip.&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00616"></a><span class="lineno">  616</span>&#160;                            sub_interval_st = sub_interval_en + 1;</div>
<div class="line"><a name="l00617"></a><span class="lineno">  617</span>&#160;                            <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00618"></a><span class="lineno">  618</span>&#160;                        }</div>
<div class="line"><a name="l00619"></a><span class="lineno">  619</span>&#160;                        </div>
<div class="line"><a name="l00620"></a><span class="lineno">  620</span>&#160;                        <span class="comment">/* Initialize vertices */</span></div>
<div class="line"><a name="l00621"></a><span class="lineno">  621</span>&#160;                        <span class="keywordtype">int</span> nvertices = sub_interval_en - sub_interval_st + 1;</div>
<div class="line"><a name="l00622"></a><span class="lineno">  622</span>&#160;                        <a class="code" href="classgraphchi_1_1graphchi__edge.html">graphchi_edge&lt;EdgeDataType&gt;</a> * edata = NULL;</div>
<div class="line"><a name="l00623"></a><span class="lineno">  623</span>&#160;                        std::vector&lt;svertex_t&gt; vertices(nvertices, svertex_t());</div>
<div class="line"><a name="l00624"></a><span class="lineno">  624</span>&#160;                        init_vertices(vertices, edata);                        </div>
<div class="line"><a name="l00625"></a><span class="lineno">  625</span>&#160;                    </div>
<div class="line"><a name="l00626"></a><span class="lineno">  626</span>&#160;                        <span class="comment">/* Now clear scheduler bits for the interval */</span></div>
<div class="line"><a name="l00627"></a><span class="lineno">  627</span>&#160;                        <span class="keywordflow">if</span> (scheduler != NULL)</div>
<div class="line"><a name="l00628"></a><span class="lineno">  628</span>&#160;                            scheduler-&gt;remove_tasks(sub_interval_st, sub_interval_en);</div>
<div class="line"><a name="l00629"></a><span class="lineno">  629</span>&#160;                        </div>
<div class="line"><a name="l00630"></a><span class="lineno">  630</span>&#160;                        <span class="comment">/* Load data */</span></div>
<div class="line"><a name="l00631"></a><span class="lineno">  631</span>&#160;                        load_before_updates(vertices);                        </div>
<div class="line"><a name="l00632"></a><span class="lineno">  632</span>&#160;                        </div>
<div class="line"><a name="l00633"></a><span class="lineno">  633</span>&#160;                        </div>
<div class="line"><a name="l00634"></a><span class="lineno">  634</span>&#160;                        logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Start updates&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00635"></a><span class="lineno">  635</span>&#160;                        <span class="comment">/* Execute updates */</span></div>
<div class="line"><a name="l00636"></a><span class="lineno">  636</span>&#160;                        exec_updates(userprogram, vertices);</div>
<div class="line"><a name="l00637"></a><span class="lineno">  637</span>&#160;                        logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Finished updates&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00638"></a><span class="lineno">  638</span>&#160;                        </div>
<div class="line"><a name="l00639"></a><span class="lineno">  639</span>&#160;                        <span class="comment">/* Load phase after updates (used by the functional engine) */</span></div>
<div class="line"><a name="l00640"></a><span class="lineno">  640</span>&#160;                        load_after_updates(vertices);</div>
<div class="line"><a name="l00641"></a><span class="lineno">  641</span>&#160;                        </div>
<div class="line"><a name="l00642"></a><span class="lineno">  642</span>&#160;                        <span class="comment">/* Save vertices */</span></div>
<div class="line"><a name="l00643"></a><span class="lineno">  643</span>&#160;                        save_vertices(vertices);</div>
<div class="line"><a name="l00644"></a><span class="lineno">  644</span>&#160;                        </div>
<div class="line"><a name="l00645"></a><span class="lineno">  645</span>&#160;                        sub_interval_st = sub_interval_en + 1;</div>
<div class="line"><a name="l00646"></a><span class="lineno">  646</span>&#160;                        </div>
<div class="line"><a name="l00647"></a><span class="lineno">  647</span>&#160;                        <span class="comment">/* Delete edge buffer. TODO: reuse. */</span></div>
<div class="line"><a name="l00648"></a><span class="lineno">  648</span>&#160;                        <span class="keywordflow">if</span> (edata != NULL) {</div>
<div class="line"><a name="l00649"></a><span class="lineno">  649</span>&#160;                            <span class="keyword">delete</span> edata;</div>
<div class="line"><a name="l00650"></a><span class="lineno">  650</span>&#160;                            edata = NULL;</div>
<div class="line"><a name="l00651"></a><span class="lineno">  651</span>&#160;                        }</div>
<div class="line"><a name="l00652"></a><span class="lineno">  652</span>&#160;                    } <span class="comment">// while subintervals</span></div>
<div class="line"><a name="l00653"></a><span class="lineno">  653</span>&#160;                 </div>
<div class="line"><a name="l00654"></a><span class="lineno">  654</span>&#160;                    <span class="keywordflow">if</span> (memoryshard-&gt;loaded()) {</div>
<div class="line"><a name="l00655"></a><span class="lineno">  655</span>&#160;                        logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;Commit memshard&quot;</span> &lt;&lt; std::endl;</div>
<div class="line"><a name="l00656"></a><span class="lineno">  656</span>&#160;</div>
<div class="line"><a name="l00657"></a><span class="lineno">  657</span>&#160;                        memoryshard-&gt;<a class="code" href="classgraphchi_1_1memory__shard.html#a7b1304bddd0f80bda65a3e15ac7e7e3e">commit</a>(modifies_inedges);</div>
<div class="line"><a name="l00658"></a><span class="lineno">  658</span>&#160;                        sliding_shards[exec_interval]-&gt;set_offset(memoryshard-&gt;offset_for_stream_cont(), memoryshard-&gt;offset_vid_for_stream_cont(),</div>
<div class="line"><a name="l00659"></a><span class="lineno">  659</span>&#160;                                                          memoryshard-&gt;edata_ptr_for_stream_cont());</div>
<div class="line"><a name="l00660"></a><span class="lineno">  660</span>&#160;                        </div>
<div class="line"><a name="l00661"></a><span class="lineno">  661</span>&#160;                        <span class="keyword">delete</span> memoryshard;</div>
<div class="line"><a name="l00662"></a><span class="lineno">  662</span>&#160;                        memoryshard = NULL;</div>
<div class="line"><a name="l00663"></a><span class="lineno">  663</span>&#160;                    }     </div>
<div class="line"><a name="l00664"></a><span class="lineno">  664</span>&#160;                   </div>
<div class="line"><a name="l00665"></a><span class="lineno">  665</span>&#160;                    userprogram.<a class="code" href="classgraphchi_1_1_graph_chi_program.html#a9be881d1232e530c8d1852188cc8a84d">after_exec_interval</a>(interval_st, interval_en, chicontext);</div>
<div class="line"><a name="l00666"></a><span class="lineno">  666</span>&#160;                } <span class="comment">// For exec_interval</span></div>
<div class="line"><a name="l00667"></a><span class="lineno">  667</span>&#160;                </div>
<div class="line"><a name="l00668"></a><span class="lineno">  668</span>&#160;                userprogram.<a class="code" href="classgraphchi_1_1_graph_chi_program.html#a24259d43b85d28af16d53a4176d29a07">after_iteration</a>(iter, chicontext);</div>
<div class="line"><a name="l00669"></a><span class="lineno">  669</span>&#160;</div>
<div class="line"><a name="l00670"></a><span class="lineno">  670</span>&#160;                </div>
<div class="line"><a name="l00671"></a><span class="lineno">  671</span>&#160;                <span class="comment">/* Move the sliding shard of the current interval to correct position and flush</span></div>
<div class="line"><a name="l00672"></a><span class="lineno">  672</span>&#160;<span class="comment">                 writes of all shards for next iteration. */</span></div>
<div class="line"><a name="l00673"></a><span class="lineno">  673</span>&#160;                <span class="keywordflow">for</span>(<span class="keywordtype">int</span> p=0; p&lt;nshards; p++) {</div>
<div class="line"><a name="l00674"></a><span class="lineno">  674</span>&#160;                    sliding_shards[p]-&gt;flush();</div>
<div class="line"><a name="l00675"></a><span class="lineno">  675</span>&#160;                    sliding_shards[p]-&gt;set_offset(0, 0, 0);</div>
<div class="line"><a name="l00676"></a><span class="lineno">  676</span>&#160;                }</div>
<div class="line"><a name="l00677"></a><span class="lineno">  677</span>&#160;                iomgr-&gt;wait_for_writes();</div>
<div class="line"><a name="l00678"></a><span class="lineno">  678</span>&#160;                </div>
<div class="line"><a name="l00679"></a><span class="lineno">  679</span>&#160;                <span class="comment">/* Write progress log */</span></div>
<div class="line"><a name="l00680"></a><span class="lineno">  680</span>&#160;                write_delta_log();</div>
<div class="line"><a name="l00681"></a><span class="lineno">  681</span>&#160;                </div>
<div class="line"><a name="l00682"></a><span class="lineno">  682</span>&#160;                <span class="comment">/* Check if user has defined a last iteration */</span></div>
<div class="line"><a name="l00683"></a><span class="lineno">  683</span>&#160;                <span class="keywordflow">if</span> (chicontext.last_iteration &gt;= 0) {</div>
<div class="line"><a name="l00684"></a><span class="lineno">  684</span>&#160;                    niters = chicontext.last_iteration + 1;</div>
<div class="line"><a name="l00685"></a><span class="lineno">  685</span>&#160;                    logstream(<a class="code" href="logger_8hpp.html#a6ff63e8955665c4a58b1598f2b07c51a">LOG_DEBUG</a>) &lt;&lt; <span class="stringliteral">&quot;Last iteration is now: &quot;</span> &lt;&lt; (niters-1) &lt;&lt; std::endl;</div>
<div class="line"><a name="l00686"></a><span class="lineno">  686</span>&#160;                }</div>
<div class="line"><a name="l00687"></a><span class="lineno">  687</span>&#160;                iteration_finished();</div>
<div class="line"><a name="l00688"></a><span class="lineno">  688</span>&#160;            } <span class="comment">// Iterations</span></div>
<div class="line"><a name="l00689"></a><span class="lineno">  689</span>&#160;            </div>
<div class="line"><a name="l00690"></a><span class="lineno">  690</span>&#160;            <span class="comment">// Commit preloaded shards</span></div>
<div class="line"><a name="l00691"></a><span class="lineno">  691</span>&#160;            iomgr-&gt;commit_preloaded();</div>
<div class="line"><a name="l00692"></a><span class="lineno">  692</span>&#160;            </div>
<div class="line"><a name="l00693"></a><span class="lineno">  693</span>&#160;            m.stop_time(<span class="stringliteral">&quot;runtime&quot;</span>);</div>
<div class="line"><a name="l00694"></a><span class="lineno">  694</span>&#160;</div>
<div class="line"><a name="l00695"></a><span class="lineno">  695</span>&#160;            m.set(<span class="stringliteral">&quot;updates&quot;</span>, nupdates);</div>
<div class="line"><a name="l00696"></a><span class="lineno">  696</span>&#160;            m.set(<span class="stringliteral">&quot;work&quot;</span>, work);</div>
<div class="line"><a name="l00697"></a><span class="lineno">  697</span>&#160;            m.set(<span class="stringliteral">&quot;nvertices&quot;</span>, num_vertices());</div>
<div class="line"><a name="l00698"></a><span class="lineno">  698</span>&#160;            m.set(<span class="stringliteral">&quot;execthreads&quot;</span>, (<span class="keywordtype">size_t</span>)exec_threads);</div>
<div class="line"><a name="l00699"></a><span class="lineno">  699</span>&#160;            m.set(<span class="stringliteral">&quot;loadthreads&quot;</span>, (<span class="keywordtype">size_t</span>)load_threads);</div>
<div class="line"><a name="l00700"></a><span class="lineno">  700</span>&#160;            m.set(<span class="stringliteral">&quot;scheduler&quot;</span>, (<span class="keywordtype">size_t</span>)use_selective_scheduling);</div>
<div class="line"><a name="l00701"></a><span class="lineno">  701</span>&#160;            </div>
<div class="line"><a name="l00702"></a><span class="lineno">  702</span>&#160;            <span class="comment">// Stop HTTP admin</span></div>
<div class="line"><a name="l00703"></a><span class="lineno">  703</span>&#160;        }</div>
<div class="line"><a name="l00704"></a><span class="lineno">  704</span>&#160;        </div>
<div class="line"><a name="l00705"></a><span class="lineno">  705</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> iteration_finished() {</div>
<div class="line"><a name="l00706"></a><span class="lineno">  706</span>&#160;            <span class="comment">// Do nothing</span></div>
<div class="line"><a name="l00707"></a><span class="lineno">  707</span>&#160;        }</div>
<div class="line"><a name="l00708"></a><span class="lineno">  708</span>&#160;       </div>
<div class="line"><a name="l00709"></a><span class="lineno">  709</span>&#160;        stripedio * get_iomanager() {</div>
<div class="line"><a name="l00710"></a><span class="lineno">  710</span>&#160;            <span class="keywordflow">return</span> iomgr;</div>
<div class="line"><a name="l00711"></a><span class="lineno">  711</span>&#160;        }</div>
<div class="line"><a name="l00712"></a><span class="lineno">  712</span>&#160;        </div>
<div class="line"><a name="l00713"></a><span class="lineno">  713</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> set_modifies_inedges(<span class="keywordtype">bool</span> b) {</div>
<div class="line"><a name="l00714"></a><span class="lineno">  714</span>&#160;            modifies_inedges = b;</div>
<div class="line"><a name="l00715"></a><span class="lineno">  715</span>&#160;        }</div>
<div class="line"><a name="l00716"></a><span class="lineno">  716</span>&#160;        </div>
<div class="line"><a name="l00717"></a><span class="lineno">  717</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> set_modifies_outedges(<span class="keywordtype">bool</span> b) {</div>
<div class="line"><a name="l00718"></a><span class="lineno">  718</span>&#160;            modifies_outedges = b;</div>
<div class="line"><a name="l00719"></a><span class="lineno">  719</span>&#160;        }</div>
<div class="line"><a name="l00720"></a><span class="lineno">  720</span>&#160;        </div>
<div class="line"><a name="l00721"></a><span class="lineno">  721</span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> set_only_adjacency(<span class="keywordtype">bool</span> b) {</div>
<div class="line"><a name="l00722"></a><span class="lineno">  722</span>&#160;            only_adjacency = b;</div>
<div class="line"><a name="l00723"></a><span class="lineno">  723</span>&#160;        }</div>
<div class="line"><a name="l00724"></a><span class="lineno">  724</span>&#160;        </div>
<div class="line"><a name="l00730"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#aa1507f1394e0ee35483959e6dfb8bc55">  730</a></span>&#160;        <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#aa1507f1394e0ee35483959e6dfb8bc55">set_blocksize</a>(<span class="keywordtype">size_t</span> blocksize_in_bytes) {</div>
<div class="line"><a name="l00731"></a><span class="lineno">  731</span>&#160;            blocksize = blocksize_in_bytes;</div>
<div class="line"><a name="l00732"></a><span class="lineno">  732</span>&#160;        }</div>
<div class="line"><a name="l00733"></a><span class="lineno">  733</span>&#160;        </div>
<div class="line"><a name="l00739"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a04a4576cdc52943d56adfd8ff470801f">  739</a></span>&#160;        <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a04a4576cdc52943d56adfd8ff470801f">set_membudget_mb</a>(<span class="keywordtype">int</span> mbs) {</div>
<div class="line"><a name="l00740"></a><span class="lineno">  740</span>&#160;            membudget_mb = mbs;</div>
<div class="line"><a name="l00741"></a><span class="lineno">  741</span>&#160;        }</div>
<div class="line"><a name="l00742"></a><span class="lineno">  742</span>&#160;        </div>
<div class="line"><a name="l00743"></a><span class="lineno">  743</span>&#160;        </div>
<div class="line"><a name="l00744"></a><span class="lineno">  744</span>&#160;        <span class="keywordtype">void</span> set_load_threads(<span class="keywordtype">int</span> lt) {</div>
<div class="line"><a name="l00745"></a><span class="lineno">  745</span>&#160;            load_threads = lt;</div>
<div class="line"><a name="l00746"></a><span class="lineno">  746</span>&#160;        }</div>
<div class="line"><a name="l00747"></a><span class="lineno">  747</span>&#160;        </div>
<div class="line"><a name="l00748"></a><span class="lineno">  748</span>&#160;        <span class="keywordtype">void</span> set_exec_threads(<span class="keywordtype">int</span> et) {</div>
<div class="line"><a name="l00749"></a><span class="lineno">  749</span>&#160;            exec_threads = et;</div>
<div class="line"><a name="l00750"></a><span class="lineno">  750</span>&#160;        }</div>
<div class="line"><a name="l00751"></a><span class="lineno">  751</span>&#160;        </div>
<div class="line"><a name="l00756"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a4d95236178e759928b52b05ac5b2f10f">  756</a></span>&#160;        <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a4d95236178e759928b52b05ac5b2f10f">set_enable_deterministic_parallelism</a>(<span class="keywordtype">bool</span> b) {</div>
<div class="line"><a name="l00757"></a><span class="lineno">  757</span>&#160;            enable_deterministic_parallelism = b;</div>
<div class="line"><a name="l00758"></a><span class="lineno">  758</span>&#160;        }</div>
<div class="line"><a name="l00759"></a><span class="lineno">  759</span>&#160;        </div>
<div class="line"><a name="l00760"></a><span class="lineno">  760</span>&#160;    <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00761"></a><span class="lineno">  761</span>&#160;        </div>
<div class="line"><a name="l00765"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a8c4fe7f4bccdbb667e6d4af8d35a07c0">  765</a></span>&#160;        <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a8c4fe7f4bccdbb667e6d4af8d35a07c0">load_vertex_intervals</a>() {</div>
<div class="line"><a name="l00766"></a><span class="lineno">  766</span>&#160;            <span class="keywordtype">char</span> partstr[128];</div>
<div class="line"><a name="l00767"></a><span class="lineno">  767</span>&#160;            sprintf(partstr, <span class="stringliteral">&quot;.%d&quot;</span>, nshards);</div>
<div class="line"><a name="l00768"></a><span class="lineno">  768</span>&#160;            </div>
<div class="line"><a name="l00769"></a><span class="lineno">  769</span>&#160;            std::string intervalsFilename = filename_intervals(base_filename, nshards);</div>
<div class="line"><a name="l00770"></a><span class="lineno">  770</span>&#160;            std::ifstream intervalsF(intervalsFilename.c_str());</div>
<div class="line"><a name="l00771"></a><span class="lineno">  771</span>&#160;            </div>
<div class="line"><a name="l00772"></a><span class="lineno">  772</span>&#160;            <span class="keywordflow">if</span> (!intervalsF.good()) {</div>
<div class="line"><a name="l00773"></a><span class="lineno">  773</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aced66975c154ea0e2a8ec3bc818b4e08">LOG_ERROR</a>) &lt;&lt; <span class="stringliteral">&quot;Could not load intervals-file: &quot;</span> &lt;&lt; intervalsFilename &lt;&lt; std::endl;</div>
<div class="line"><a name="l00774"></a><span class="lineno">  774</span>&#160;            }</div>
<div class="line"><a name="l00775"></a><span class="lineno">  775</span>&#160;            assert(intervalsF.good());</div>
<div class="line"><a name="l00776"></a><span class="lineno">  776</span>&#160;            </div>
<div class="line"><a name="l00777"></a><span class="lineno">  777</span>&#160;            intervals.clear();</div>
<div class="line"><a name="l00778"></a><span class="lineno">  778</span>&#160;            </div>
<div class="line"><a name="l00779"></a><span class="lineno">  779</span>&#160;            vid_t st=0, en;            </div>
<div class="line"><a name="l00780"></a><span class="lineno">  780</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; nshards; i++) {</div>
<div class="line"><a name="l00781"></a><span class="lineno">  781</span>&#160;                assert(!intervalsF.eof());</div>
<div class="line"><a name="l00782"></a><span class="lineno">  782</span>&#160;                intervalsF &gt;&gt; en;</div>
<div class="line"><a name="l00783"></a><span class="lineno">  783</span>&#160;                intervals.push_back(std::pair&lt;vid_t,vid_t&gt;(st, en));</div>
<div class="line"><a name="l00784"></a><span class="lineno">  784</span>&#160;                st = en + 1;</div>
<div class="line"><a name="l00785"></a><span class="lineno">  785</span>&#160;            }</div>
<div class="line"><a name="l00786"></a><span class="lineno">  786</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i=0; i &lt; nshards; i++) {</div>
<div class="line"><a name="l00787"></a><span class="lineno">  787</span>&#160;                logstream(<a class="code" href="logger_8hpp.html#aeb4f36db01bd128c7afeac5889dac311">LOG_INFO</a>) &lt;&lt; <span class="stringliteral">&quot;shard: &quot;</span> &lt;&lt; intervals[i].first &lt;&lt; <span class="stringliteral">&quot; - &quot;</span> &lt;&lt; intervals[i].second &lt;&lt; std::endl;</div>
<div class="line"><a name="l00788"></a><span class="lineno">  788</span>&#160;            }</div>
<div class="line"><a name="l00789"></a><span class="lineno">  789</span>&#160;            </div>
<div class="line"><a name="l00790"></a><span class="lineno">  790</span>&#160;        }</div>
<div class="line"><a name="l00791"></a><span class="lineno">  791</span>&#160;        </div>
<div class="line"><a name="l00792"></a><span class="lineno">  792</span>&#160;    <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00793"></a><span class="lineno">  793</span>&#160;        <a class="code" href="classgraphchi_1_1mutex.html">mutex</a> httplock;</div>
<div class="line"><a name="l00794"></a><span class="lineno">  794</span>&#160;        std::map&lt;std::string, std::string&gt; json_params;</div>
<div class="line"><a name="l00795"></a><span class="lineno">  795</span>&#160;        </div>
<div class="line"><a name="l00796"></a><span class="lineno">  796</span>&#160;    <span class="keyword">public</span>:</div>
<div class="line"><a name="l00797"></a><span class="lineno">  797</span>&#160;        </div>
<div class="line"><a name="l00802"></a><span class="lineno"><a class="code" href="classgraphchi_1_1graphchi__engine.html#a1c31963a5d1b0fd4498045d99f2d49b1">  802</a></span>&#160;        <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a1c31963a5d1b0fd4498045d99f2d49b1">set_json</a>(std::string key, std::string value) {</div>
<div class="line"><a name="l00803"></a><span class="lineno">  803</span>&#160;            httplock.lock();</div>
<div class="line"><a name="l00804"></a><span class="lineno">  804</span>&#160;            json_params[key] = value;</div>
<div class="line"><a name="l00805"></a><span class="lineno">  805</span>&#160;            httplock.unlock();</div>
<div class="line"><a name="l00806"></a><span class="lineno">  806</span>&#160;        }</div>
<div class="line"><a name="l00807"></a><span class="lineno">  807</span>&#160;        </div>
<div class="line"><a name="l00808"></a><span class="lineno">  808</span>&#160;        <span class="keyword">template</span> &lt;<span class="keyword">typename</span> T&gt;</div>
<div class="line"><a name="l00809"></a><span class="lineno">  809</span>&#160;        <span class="keywordtype">void</span> <a class="code" href="classgraphchi_1_1graphchi__engine.html#a1c31963a5d1b0fd4498045d99f2d49b1">set_json</a>(std::string key, T val) {</div>
<div class="line"><a name="l00810"></a><span class="lineno">  810</span>&#160;            std::stringstream ss;</div>
<div class="line"><a name="l00811"></a><span class="lineno">  811</span>&#160;            ss &lt;&lt; val;</div>
<div class="line"><a name="l00812"></a><span class="lineno">  812</span>&#160;            <a class="code" href="classgraphchi_1_1graphchi__engine.html#a1c31963a5d1b0fd4498045d99f2d49b1">set_json</a>(key, ss.str());</div>
<div class="line"><a name="l00813"></a><span class="lineno">  813</span>&#160;        }</div>
<div class="line"><a name="l00814"></a><span class="lineno">  814</span>&#160;        </div>
<div class="line"><a name="l00815"></a><span class="lineno">  815</span>&#160;        std::string get_info_json() {</div>
<div class="line"><a name="l00816"></a><span class="lineno">  816</span>&#160;            std::stringstream json;</div>
<div class="line"><a name="l00817"></a><span class="lineno">  817</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;{&quot;</span>;</div>
<div class="line"><a name="l00818"></a><span class="lineno">  818</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;file\&quot; : \&quot;&quot;</span> &lt;&lt; base_filename &lt;&lt; <span class="stringliteral">&quot;\&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00819"></a><span class="lineno">  819</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;numOfShards\&quot;: &quot;</span> &lt;&lt; nshards &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00820"></a><span class="lineno">  820</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;iteration\&quot;: &quot;</span> &lt;&lt; chicontext.iteration &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00821"></a><span class="lineno">  821</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;numIterations\&quot;: &quot;</span> &lt;&lt; chicontext.num_iterations &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00822"></a><span class="lineno">  822</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;runTime\&quot;: &quot;</span> &lt;&lt; chicontext.runtime() &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00823"></a><span class="lineno">  823</span>&#160;            </div>
<div class="line"><a name="l00824"></a><span class="lineno">  824</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;updates\&quot;: &quot;</span> &lt;&lt; nupdates &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00825"></a><span class="lineno">  825</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;nvertices\&quot;: &quot;</span> &lt;&lt; chicontext.nvertices &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00826"></a><span class="lineno">  826</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;interval\&quot;:&quot;</span> &lt;&lt; exec_interval &lt;&lt; <span class="stringliteral">&quot;,\n&quot;</span>;</div>
<div class="line"><a name="l00827"></a><span class="lineno">  827</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;windowStart\&quot;:&quot;</span> &lt;&lt; sub_interval_st &lt;&lt; <span class="stringliteral">&quot;,&quot;</span>;</div>
<div class="line"><a name="l00828"></a><span class="lineno">  828</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;windowEnd\&quot;: &quot;</span> &lt;&lt; sub_interval_en &lt;&lt; <span class="stringliteral">&quot;,&quot;</span>;</div>
<div class="line"><a name="l00829"></a><span class="lineno">  829</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;\&quot;shards\&quot;: [&quot;</span>;</div>
<div class="line"><a name="l00830"></a><span class="lineno">  830</span>&#160;            </div>
<div class="line"><a name="l00831"></a><span class="lineno">  831</span>&#160;            <span class="keywordflow">for</span>(<span class="keywordtype">int</span> p=0; p &lt; (int)nshards; p++) {</div>
<div class="line"><a name="l00832"></a><span class="lineno">  832</span>&#160;                <span class="keywordflow">if</span> (p&gt;0) json &lt;&lt; <span class="stringliteral">&quot;,&quot;</span>;</div>
<div class="line"><a name="l00833"></a><span class="lineno">  833</span>&#160;                </div>
<div class="line"><a name="l00834"></a><span class="lineno">  834</span>&#160;                json &lt;&lt; <span class="stringliteral">&quot;{&quot;</span>;</div>
<div class="line"><a name="l00835"></a><span class="lineno">  835</span>&#160;                json &lt;&lt; <span class="stringliteral">&quot;\&quot;p\&quot;: &quot;</span> &lt;&lt; p &lt;&lt; <span class="stringliteral">&quot;, &quot;</span>;</div>
<div class="line"><a name="l00836"></a><span class="lineno">  836</span>&#160;                json &lt;&lt; sliding_shards[p]-&gt;get_info_json();</div>
<div class="line"><a name="l00837"></a><span class="lineno">  837</span>&#160;                json &lt;&lt; <span class="stringliteral">&quot;}&quot;</span>;</div>
<div class="line"><a name="l00838"></a><span class="lineno">  838</span>&#160;            }</div>
<div class="line"><a name="l00839"></a><span class="lineno">  839</span>&#160;            </div>
<div class="line"><a name="l00840"></a><span class="lineno">  840</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;]&quot;</span>;</div>
<div class="line"><a name="l00841"></a><span class="lineno">  841</span>&#160;            json &lt;&lt; <span class="stringliteral">&quot;}&quot;</span>;</div>
<div class="line"><a name="l00842"></a><span class="lineno">  842</span>&#160;            <span class="keywordflow">return</span> json.str();</div>
<div class="line"><a name="l00843"></a><span class="lineno">  843</span>&#160;        }</div>
<div class="line"><a name="l00844"></a><span class="lineno">  844</span>&#160;</div>
<div class="line"><a name="l00845"></a><span class="lineno">  845</span>&#160;    };</div>
<div class="line"><a name="l00846"></a><span class="lineno">  846</span>&#160;    </div>
<div class="line"><a name="l00847"></a><span class="lineno">  847</span>&#160;    </div>
<div class="line"><a name="l00848"></a><span class="lineno">  848</span>&#160;};</div>
<div class="line"><a name="l00849"></a><span class="lineno">  849</span>&#160;</div>
<div class="line"><a name="l00850"></a><span class="lineno">  850</span>&#160;</div>
<div class="line"><a name="l00851"></a><span class="lineno">  851</span>&#160;</div>
<div class="line"><a name="l00852"></a><span class="lineno">  852</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00853"></a><span class="lineno">  853</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00854"></a><span class="lineno">  854</span>&#160;</div>
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